Advanced rollback wheel-lift

A transport vehicle for transporting disabled vehicles, said transport vehicle comprising a chassis, a rollback deck apparatus for loading and transporting a first disabled vehicle, and a wheel-lift apparatus for loading and towing a second disabled vehicle,

• said rollback deck apparatus comprising:
• a deck, and
• a deck subframe,
• said deck being slidably mounted on the deck subframe such that the deck slides between a forward transporting position and a rearward preloading position by at least one deck cylinder, and
• said deck subframe being pivotally attached to the chassis such that, when the deck is at the preloading position, the deck subframe pivots relative to the chassis between a position at which it extends generally parallel to the chassis and a loading position at which it extends at an angle relative to the chassis such that a rear end of the deck contacts the ground for loading the first disabled vehicle, and
• wherein the wheel-lift apparatus comprises:
• a base boom having a fly boom telescopically extendable from a rear end of said base boom by a boom cylinder,
• a tilt cylinder with a first end attached to a front end of the base boom and a second end attached to the deck subframe, and the tilt cylinder being suitable for moving the base and fly booms between load and tow positions,
• a lift cylinder with a first end attached to the rear end of the base boom and a second end attached to the deck subframe at a position distal from the second end of the tilt cylinder, and the lift cylinder being suitable for moving the base and fly booms between the load and tow positions,
• a wheel supporting cradle attached to a rear end of the fly boom distal from the rear end of the base boom, said wheel supporting cradle being configured to receive and secure wheels of said second disabled vehicle, and
• said tilt cylinder in combination with said lift cylinder providing low angle base and fly boom positions for loading and towing said second disabled vehicle.

A boom assembly suitable for use in a wheel-lift apparatus of a transport vehicle having a rollback deck slidably mounted on a deck subframe, said boom assembly comprising:

• a base boom having a fly boom telescopically extendable from a rear end of the base boom by an extension cylinder;
• a tilt cylinder with a first end attached to a front end of the base boom and a second end suitable for attachment to the deck subframe, and the tilt cylinder being suitable for moving the base and fly booms between load and tow positions;
• a lift cylinder with a first end attached to the rear end of the base boom and a second end suitable for attachment to the deck subframe at a position distal from the second end of the tilt cylinder, and the lift cylinder being suitable for moving the base and fly booms between the load and tow positions,
• said tilt cylinder in combination with said lift cylinder suitable for providing low angle base and fly boom positions for loading and towing said disabled vehicle.